Yellow-eyed penguin / hoiho Megadyptes antipodes Distribution - PowerPoint PPT Presentation

Yellow-eyed penguin / hoiho Megadyptes antipodes

Distribution

Distribution Almost all species information originates from mainland

Foraging behaviour

Foraging behaviour 275 of 300 dives went to seafloor Total trip duration: 11.6 hrs Time spent at seafloor: 5.5 hrs

Yellow-eyed penguin diet van Heezik (1990a) Otago, Catlins (1984-1986) van Heezik (1990b) Whenua Hou (1984) Moore & Wakelin (1997) Otago Peninsula, Long Point (Catlins) Browne et al. (2011) Stewart Is/Rakiura, Whenua Hou (2007)

Dominant prey species Red cod Pseudophycis bacchus

Dominant prey species Blue cod Parapercis colias

Dominant prey species Opalfish Hemerocoetes monopterygius

Other prey Slender sprat Sprattus antipodum

Other prey Arrow squid Nototodarus sloani

Tarakihi Silverside Ahuru Nemadactylus macropterus Argentina elongata Auchenoceros punctatus

Blue cod capture

Opalfish capture

Jellyfish harvesting

Prey composition

Prey composition Opalfish Red Cod Slender sprat 1984-86

Prey composition Opalfish Blue cod 1991-93

Prey composition Opalfish Blue cod 1984

Prey composition Blue cod 2006

Prey composition

Prey composition 2.0 2.0 breeding success chicks/pair 1.27 1.40 1.83 1.0 0 1.31

too big to swallow for chicks

Recommendations 1. Foraging monitoring programme 2. Non-invasive diet monitoring (i.e. faecal DNA, cameras) 3. Stable isotope screening programme & database (blood & feathers) 4. Catch up on YEP foraging ecology & diet in sub-Antarctic populations